Apparatus for closing cartons



Aug. 18, 1936. c. FIELD 2,051,035

APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1928 8 Sheets-Sheet 1 ga 1 Z9 27 :HIIIIIII lllllllllllll fl 5 E 733 Z26 Z3? INVENTOR'. Crosby fi/o ATT RNE Aug. 18, 1936. Q FlELD 2,051,035

APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1923 8 Sheets-Sheet 2 Aug. 18, 1936.

c. FIELD APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1928 8 Sheets-Sheet 3 Aug. 18, H36. 0. FIELD APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1928 8 Sheets-Sheet 4 v INlfENTOR,

C'rasy 7'7e/o E Wm T. A

Aug. 18, 1936. 7 Q L 2,051,035

APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1928 8 Shets-Sheet 5 INVEN TOR. Gosy file/o AT 'rfiNEx s.

Aug. 18, 1936. c. FIELD APPARATUS FOR CLOSING CARTONS 8 Sheets-Sheet 6 Original Filed April. 16, 1923 MINIMUM w IN V EN TOR.

Aug. 18, 1936. c. FIELD APPARATUS FOR CLOSING CARTONS Original Filed April 16, 1923 8 Sheets-$heet 7 mew WWW INVENTOR.

II I. l

C. FIELD APPARATUS FOR CLOSING CARTONS 8 Sheets-Sheet 8 r ll 0 W..

Original Filed April 16, 1928 Aug. 18, 1936.

Patented Aug. 18, 1936 Eli STATES Delaware Crosby Field, Brooklyn, N. Y., assignor to Flakice- Corporation, Brooklyn, N.

Y., a corporation of Application April 16, 1928, Serial No. 210,257 Renewed August 1'7, 1932 28 Claims.

This invention relates to the art of preserving perishable substances and particularly to portable cartons.

It has hitherto been common practice to pack perishable substances such as ice cream and the heavy and subject to leakage of the melting re- I frigerant, and in the latter case the cartons, once removed from the refrigerator, have failed to protect their contents from melting or other deterioration.

Among the objects of the present invention is the provision of an inexpensive light carton designed to carry both a quantity of the substance to be preserved and a quantity of refrigerant without danger of intermixture .of the two materials and without liability of leakage of either from the carton; and the provision of means to facilitate loading cartons with substance to be preserved.

A further object is to provide automatic machinery whereby such cartons may be rapidly and effectively charged with refrigerant and the refrigerant effectively sealed in place.

Such cartons, when so charged with refrigerant, may then be filled with any perishable substance with assurance that the latter will remain at low temperature for a relatively long period of time,- regardless of where the carton may be kept or how it may be handled.

One form of mechanism for charging the cartons with refrigerant in accordance with my method is so designed that an empty carton may be fed into the device at a point hereinafter designated as the delivery station, and from there passed to a second station where the carton is automatically charged with refrigerant, and then passed to a third station where the refrigerantis automatically sealed in place within the carton which is then returned to the delivery station for removal by the operator,--the operator having only to remove charged cartons and insert empty ones at the delivery station.

One illustrative embodiment of the invention is hereinafter described and shown in the accompanying drawings wherein: I

Fig. l is a sectional view of the preferred form of carton employed, the carton being shown filled both with refrigerant/and the substance to be preserved; r

Fig. 2 is a vertical sectional view of one form of machine which may be employed for filling the cartons with refrigerant and for applying and sealing the refrigerant-retaining caps, the section being taken approximately on the line 2-2 of Figs. 3, 4, 5, and 6.

Fig. 3 is a horizontal section taken on the line 33 of Fig. 2;

Fig. 4 is a horizontal section taken on the line L4 of Fig. 2;

Fig. 5 is a horizontalsection taken on the line 55 of Figs. 2 and'lp Fig. 6 is a horizontal section taken on the line 66 of Figs. 2 and '1;

Fig. '7 is a vertical 1-! of Fig. 5; i

Fig. 8 is an enlarged sectional view of the carton-holding'mechanism;

Fig. 9 is a section taken on line 99 of Fig. 8;

Fig. 10 is a view similarto Fig. 8 but showing the parts in position for receiving a carton as shown in Fig. 2;

Fig. 11 is an enlarged elevation of the refrigerant-packing mechanism partially shown in Fig. 2;

Fig. 12 is an enlarged section showing the details of the cap-applying and sealing mechanism;

Fig. 12A is an enlarged section of a heating ele ment associated with the sealing mechanism shown in Fig. 12. v

Fig. 13 is a detail elevation of certain elements of the cap-applying mechanism;

Fig. 14 is a view of a carton as placed on the carrier;

Fig. 15 is a view of the carton partly filled with refrigerant;

Fig. 16 is a view of the ,cartonwlth the refrigerant sealed therein;

Fig. 17 is a view of a mold for packaging the substance to be preserved, showing the manner of using the mold, and

Fig. 18 is a similar view of the mold open and the package closed and partially removed from the mold.

The carton most suitable for present purposes may be said to consist in general of an inner cup for the substance to be preserved and an outer surrounding container for holding the refrigerant. Preferably the refrigerant will not only surround the inner cup, but also will overlie one or both of its ends.

Referring to Fig. 1 which shows the preferred form of cylindrical carton C filled both with the substance to be preserved and the refrigerant all 55 section taken on the line sealed and ready for delivery to the consumer, the inner cup 20 may be made up of a single sheet of fairly light paper pleated to avoid the necessity of any seam. This inner cup may be waxed or otherwise treated to render it impervious and form-retaining. The cup 20 is provided at its upper edge with a laterally extending flange 2|. which is bent over and secured to the edge of an outer concentric container 22, the latter preferably being of a heavier construction. The outer container 22 may, for example, be made of over: lapping layers of spirally wound cardboard suitably waxed or otherwise treated to make it impervious. Closing the lower end of the container 22 the circular disc 23 (hereinbefore termed a cap) is sealed to and. within the peripheral edge of the container 22, thus forming a closed chamberv 24 to contain the refrigeran The substance to be preserved may be placed directly in. the cup 20, but preferably it is first placed in a light seamless sack 26 also made of a single sheet of paper pleated and waxed.

This .sack 26 may be filled in any suitable manher. For example, it may be placed in a mold of the same size and shape as the inner cup 20, and then filled with the substance to be preserved, the upper flared edge 21 being necked in after filling. While obviously such mold may be of any suitable nature, a particularly useful one is shown in Figs. 17 and 18 wherein the mold is shown to comprise two complementary parts 33, 34 connected at the bottom by a hinge35. When the .sack 26 is filled to the top of the mold the latter maybe spread apart to permit the easy removal of the filled sack.

Handling the filled sack is facilitated by the neck portion 21 which oes not transmit heat from the hand to the contents. Further, as shown in Fig. 1, it will form a spacing means between the sack and the container cover 28, creating a dead air insulating space, and even though no refrigerant be used at that end, the carton, when packed, will still be satisfactorily heat-excluding,

the cover 28 being arranged to fit tightly upon the upper end of the container 22..

From the above description it will be readily understood that the inner cup 20 of the carton may be filled without difliculty by hand. If desired, the refrigerant chamber surrounding the cup 20 might also be charged by hand. Preferably, however, the introduction of the refrigerant is accomplished by machine, and one form of machine found suitable for this purpose will now be described.

As stated above, the preferred apparatus is largely automatic in its operation and performs the several operations necessary to charging the carton with refrigerant at various successive positions, the cartons being moved intermittently from one position to the next. The cartons are preferably held so that the refrigerant material may pass into them by gravity. To this end the carton is carried by the apparatus in the position shown in Figs. 14 to 16, i. e., in inverted position to that shown in Fig. 1.

Such apparatus in the present case comprises structural frame work to support the various mechanisms, which include a motor for supplying power; mechanism for importing the desired intermitten successive movements to the parts;

mechanism for holding the cartons securely but without liability of damaging them; mechanism axes so that the refrigeratingmaterial will bl properly distributed in the cartons; mechanisn for tamping the refrigerant in place as supplied mechanism for supplying, positioning and sealinl caps to enclose the refrigerant in its chamber and ancillary mechanism to insure the prope: successive operation of the parts.

Referring to the lower portion of Fig. 2, th general framework of the apparatus rests upor a-circular base 50, from which rises a cylindrical casing 5|, closed at the top by a cover 52, tc enclose the working parts.

The initial introduction and positioning of the cartons, their charging with refrigerant, and the sealing of the refrigerant therein, are performed by the apparatus in three successive steps at three successive stations, the carton-supporting and carrying devices being arranged to turn from station to station in a circular path.

In order'that the mechanism at all three statiolls may be in operation simultaneously, the carton-carryingmechanism is equipped to support three cartons equidistant from each other, as indicated in Fig. 4. The empty cartons are manually inserted and positioned in the machine at the station hereinafter described as the delivery station .D; are automatically supplied and packed with refrigerant at the next station which will be designated as the filling station F; and the refrigerant-retaining discs are automatically positioned and sealed on the cartons at a third station to be designated as the sealing station 5, from which station the charged cartons are automatically returned for manual removal at the delivery station D.

Still referring to Figs. 2 and 4, the supporting means or carrier for the cartons is borne by a central vertical shaft 60 to which are fixed through the hub 6| three radial equally spaced supporting arms I20.

The shaft 60 is supported at its lower end in a bearing 62 formed in the base 50, and at its upper end by a stationary bearing 63.

Near the lower right hand corner of Fig. ,2 a motor M is mounted upon lugs 54 projecting from the base"50'. To the right of the motor a control switch 55 is shown secured to the casing 5|. Over the motor a protective inclined drip plate 53 may be provided, there being a drain spout 56 at the lower edge of the plate for carrying collected liquid out of the casing 5|. If desired a drain spout 51 may also be provided at the bottom of the easing 5| and both of the spouts may be provided with a hand valve.

Mounted rotatably but non-slidably upon the shaft 60 is a sleeve 64 integrally provided with a bevel gear 65 meshing with and driven by a beve gear 66 fixed upon the shaft 61 of the motor M.

- high speed side of a reducing gear train housed in a gear box 10 carried by a bracket H secured to the left hand side of the casing 5 I. Immediately below the gear box 10, the low speed pinion I3 .of the gear train meshes with and drives the gear ll-which is also rotatably but non-slidably mounted on the shaft 60. Below and integral with the gear '14 is a driving member 15 sufficiently identified as a cam. The cam 15, driven as above indicated, rotates slowly at uniform speed and at a certain point in each revolution strikes the upwardly extending lug 16 of the bolt' 11 slidably secured (see Fig. 3) upon the arm 18 which is free to turn but not to slide upon the shaft 88. The bolt 11. is slidably secured upon the arm I8 by means of strap guides I9 integral with thearm I8.

As best shown in Fig. 3, generally concentric with the are described by the free end of the arm the shaft 68, but at the lower end of the abut-.-

ment member M the radius of the inner face of this member increases; forming a portion. 85 which is farther from the shaft 68 than the rest of the inner face of the abutment member.

The upper end of the abutment member 8I is inwardly hooked to support a bufier pad 88 against which the oscillatory arm I8 lies when the latter is in its normal position, toward which position the arm I8 is yieldingly urged by the spring 88 tensloned between the ear 88 fixed to the casing and the arm 81 integral with the arm I8. It will therefore be evident that when the cam I5 first engages the lug I8 of the bolt II it will drive the bolt and the arm I8 in a counterclockwise direction (as viewed in Fig. 3) for the bolt is restrained from outward movement by the arc-shaped face 84 of the abutment member 8|, which consequently prevents the lug I8 from sliding. along and escaping past the end of the cam. But when the bolt 11 reaches the receding portion 85 of the abutment member 8| it is free to w move outwardly and the lug I8 will then escape from operative contact with the cam I5, freeing the arm I8 which is then returned to its normal position by the spring 88 previously referred to.

The arm I8 is provided with a downwardly extending pin 88 whereon is pivoted a pawl 8|, the operative end of which is urged inwardly by a spring 82 against a ratchet disc 94 rigidly secured to the shaft 58.

The periphery of the ratchet disc 84 is provided with three notches 93 equidistant from each other and corresponding in position to the-carton-carryingarms I28. As the arm I8 pivots counterclockwise upon the shaft 88 and approaches the point at which,'due to the radial movement of the bolt II the arm I,8is freed to be returned to its normal position, the pawl 9| engages one of the notches 83 so that when the arm I8- is released from the cam I5 not only will the arm be returned to its normal position against the buffer pad 88,

but it will carry with it the ratchet disc 88, rotating the shaft 88 clockwise through one-third of a revolution. The friction of parts will be sufllcient to prevent the shaft-from turning by mm mentum beyond the point to which it is thus carrie d by the pawl.

The cam I5 will then continue to turn counterclockwise through the remainder of the revolution before it again engages the bolt, thus providing a period of rest for the shaft 58 and the carton-carrying elements during which period each of the carton-carrying elements is at one of the three operative stations where, respectively, cartons are being delivered, charged with refrigerant, and sealed. By the time the cam I5 has completed its rotation the various operations at each of the three stations have been completed and the cam I5 causes a repetition ofthe mechanical movements last described, whereby each carton is advanced to the next station, one completely charged and sealed carton being manually removed by the operator and replaced by an empty carton at the delivery station D.

carton-carrying means and to the various mech- Having now generally describedhow empty cartons are introduced into the apparatus, advanced from station to station therein at which stations are performed the successive operations necessary to charging the cartons with refriger- 5 ant, sealing the refrigerant in the carton and returning the charged and sealed carton to the operator, attention will be called to the means for holding and rotating the cartons on the 10 anisms operative at the three stations at which each carton successively halts.

I The means for holding the cartons in position and for rotating them about their own axes is the same as to each of thethree carton-carrying 15 elements and need only be described as to one.

Referring to Figures 2, 4, and 'I, it will be observed that each of the three carton-carrying arms I28 is provided at its outer end with a vertical bearing I2I wherein is slidably and rotatably mounted a shaft I22 which bears upon its upper end a carton-carrying table I26. The shaft I22 is slidable in the bearing I2I between a lower or operative position and an upper or inoperative position. Fixed on the lower end of the shaft 25 I22 is a gear I23 which, when the shaft I22 18 in its lower position, is adapted to mesh with and be rotated by the gear 52 of the gear sleeve 88 which is constantly driven by the motor. And it will be observed that the gear I28 will mesh with 30 and be driven by the gear I2 regardless of the position towhich the arm I28 has been turned, since the arm I28 and its shaft I22'revolve in a 'circular path about thegshaft 88.

,tion; but between the table I28 and the gear I23 a strut I2I is pivoted upon lugs I28 integral with the arm I28 and when in upright position (as shown at the right hand side of Fig. 2 and at the left hand side of Fig. '7) serves to,hold'the table I28, shaft I22 and gear I23 in the upper or inoperative position, in which position these parts are not rotated. By mechanism hereinafter to be describedeach carton-carrying table upon arrival at the delivery station D, has been automatically raised to its upper inoperative position so as to facilitate the removal of the completely charged and sealed carton from the table and its replacement by an empty carton.

The right hand portion of Fig. 2, then, shows the carton-carrying table I28 in raised non-rotating position in which position it may be readily relieved of the charged and sealed carton and loaded with an empty carton.

At the delivery station D, where cartons charged with refrigerant are removed and empty cartonsintroduced, it is important to note the details of the carton-holding devices which, (as shown in Figs. 2, 7, 8, 9, and 18) are mounted upon the upper surface of the carton-carrying table 628;. Hinged upon the table I26 through lugs I3I, I32 and pivot pin I33, is the plate 838 which may be tipped toward the operator as shown at the right hand portion of Fig. 2 and in Fig. 10. In its normal horizontal position of rest the plate I38 is supported by the lug I38 extending upwardly from the table I28, Mounted upon the plate E38 is a hollow expansible mandrel I35 shown in detail in Figs. 8, 9, and l0. This mandrel may be secured in place by screws I36. It is preferably formed of relatively thin flexible metal and is'slit from top to bottom at one side to provide over-lapping edges I31 and- I38. For a considerable distance on both sides of these over-lapping edges the mandrel is free of the plate I30 to permit its contraction and expansion respectively to facilitate the removal and replacement of cartons, and their firm holding in position for subsequent operations.

The upper end of the mandrel I35 may be covered by at protecting cap I39 attached to the non-expansible portion which may be strengthened by a vertical interior rib I40 secured to the plate I30. If desired the mandrel I35 may be secured to the rib I40 at spacedpoints MI by soldering or otherwise.-

For causing the mandrel I35 to contract and expand, a double toggle mechanism is arranged to operate between the rib I40 and the free overlapping .edges I31, I38 of the mandrel. Three pairs of spaced toggle links I42 are pivoted at i their inner ends to the rib I40 and at their outer 1 ends to the upstanding rod. I43, complementary pairs of toggle links I being pivoted at their inner ends to the links I42 and the rod I43 and at their outer ends to' the over-lapping edge portions of the mandrel I35, one set of toggles being connected to one edge and the other set to the other edge. The lower end of the rod I43 passes through an opening in the plate I30 and is pivoted to a lug I45 upon the table I26.

By this arrangement when the plate I30 is manually tipped outwardly by the operator into the position in which it is shown in Fig. 10, and at the right hand portion of Fig. 2, the toggles will be operated to draw inwardly the over-lapping edges of the mandrel, in effect reducing its diameter. In this condition the carton which has just been charged with refrigerant may readily be removed from the mandrel by the operator through the aperture I00 provided in the casing 5| at station D and an empty carton replaced upon the mandrel. As'will have-become apparent, the carton is'fitted over the mandrel in inverted position relative to that shown in Fig. 1 (as indicated in Fig. 14). When the empty cartonhas been so positioned on the mandrel the operator may then tip the mandrel and plate I30 back to horizontal position, as shown in Fig. 8;

and bythis return movement the toggles I42, I44.

reversing their action, expand the mandrel to fit tightly within the. cup portion 20 of the carton, thus holding the carton in rigid upright position (as shown in Fig. 14) ready for subsequent filling with refrigerant, the cup portion 20 being supported by the mandrel in a manner calculated to prevent injury during the charging operation.

Having positioned an empty carton upon the mandrel and having tipped the mandrel back to its normal upright position, it only remains for the operator to lower the table I 26 to its operative position so that the gear I23, maymesh with the driving gear I2. This lowering is accomplished manually by throwing down the strut I21 which has been supporting the table I26,the

strut being so designed that it cannot drop-to a' position lower than horizontal, in which position it serves, as the arms I20 turn from station to station,'to strike certain members at the filling and sealing stations and so, at the proper time, to initiate the operation of certain mechanisms at those stations which will be hereinafter described.

If a strut I2'I be allowed to remain upright,-holding the table I25 and its associated parts in their ing the process of filling, and means toinitiate cessive downward blows to tamp' The empty carton havingbeen properly 'positioned upon the mandrel, the mandrel having been tipped back so as to expand within and hold the carton upright, and the strut I21 having been dropped to its horizontal position for the purposes 1 above referred to, the continued operation of the driving mechanisms will, at the proper time, swing the arms I20 through another third of a revolution, bringing another charged carton within reach of the operator's hand at station D and 15 moving the empty carton to its position at the filling station F where it is charged with-refrigerant in the manner hereinafter described.

Mechanisms and operations at the filling station 20 About the filling station F, are grouped con-I tainers for storing and supplying refrigerant (preferably separated quantities of ice and salt),

means for crushing the iceand feeding it'into Q the cartons, means for-'feedingzsalt along with 25 the ice into the cartons,'means to cause the mixed. ice and salt to be properly disposed in the annular chamber of the carton provided therefor, means to tamp the refrigerant in the cartons durand to stop at the proper times the operation of the mechanical parts serving the above purposes, leaving them in. position to recommence their operations upon the arrival of another empty carton.

located underneath the icebin I05. Extending" 5 downwardly into the refrigerant chamber of the carton C the two rod-shaped members 20I','202 guided by fixed-sleeves 204, 205, will be seen to terminate ina curved flexible shoe 200 which is designed to ride upon the rising surface of' the refrigerant and to-deliver'to the refrigerant sucit properly in place. And lying within the. upper edge of the carton C the scraper I19 servesto spread the refrigerant toward the outside walls of the carton so that thean'nular-refrigerant chamber of the carton may be uniformly supplied and evenly filled; and salt is fed into the carton through the vertical member 202 which is made hollowfor that purpose andcommunicates with a salt bin 35 The mechanismsoperative 'at the filling station indicated at the upper left hand portion ofIFig; 2',

by the numeral I88.

Previous to the arrival of the carton at the filling station F the ice crusher I is idle, delivering no ice; the tamper 200 is held at a level above that of the upper edge of the carton as isthe scraper I19,(thus permitting the carton to move into position beneath the tamper and the scraper) and no salt is being delivered from the salt bin.

But when the carton 0 reaches the filling station, F the various station mechanisms are automatically set in motion. The scraper "0 drops to the position shown in Fig. 2, the tamper 200 descends into the refrigerant chamber of the carton and commences its oscillatory tamping movement,the 7 4 ice crusher I90 commences to operate and feed crushed ice into the carton, and the salt-delivering' mechanism begins to function. Means are of course provided to stop this operation when the carton has been suitably charged with refrigerant.

In detail the automatic means for setting the filling and tamping mechanisms into operation are best illustrated in Figs. 2, 4, 6, and 11.

Referring first to the left hand portion of Fig. 2 and the lower portion of Fig. 4, a vertical shaft 225 is journaled in brackets 226 fixed to the casing 5|. The lower end of this vertical shaft 225 is provided with an arm 224 which is normally maintained in the position shown in Fig. 4 by a coil spring. This arm 224 lies in substantially the same horizontal plane as that of the carton-carrying arms I20 so that as an arm I20 turns into position at the filling stationF the strut I21 extending horizontally from the arm I20 encounters the arm 224, thus rotating the vertical shaft 225. The shaft 225 carries at its top end a similar arm 221.

Referring particularly to the upper left hand portion of Fig. 11, it will be observed that when with two notches, 22I, 222 shaped to receive the formed end of a compression spring 2I8 secured by pins 2I9, 220 to the carriage 2I0, this spring exerting a constant pressure against the dog. As

shown in the upper left hand portion of Flg. .11, the arm 221 has not yet encountered the upper end of the dog 2I5; and the spring, registering with the upper notch 22I, holds the dog in the position shown. But when the arm 221 strikes the upper end of the dog 2 I5 the latter'is rotated counterclockwise on the pin 2I6. and the lower end of the dog removed from engagement with the annular groove 2" in which terminates the helicalthread of the vertical shaft I50 which is mounted insuitable bearings I5I, I52, I53, fixed to the casing 5| or parts integral therewith.

When the parts are in the position shown in Fig. 11 the upper portion of the shaft I50 is surrounded by the sleeve 2 forming an integral part of the carriage 2I0, the-sleeve 2I4 fitting loosely around the shaft I50 .so astopermit the carriage 2I0 to be dropped from the position in which it is shown in Fig. 11 to the position in which it is shown in Fig. 2. The carriage 2I0 will be so dropped when the dog 2I5 has been rotated out of contact with the helical worm. thread of the shaft I50, as above described.

In the'position shown in Fig. 11 the carriage 2I0 extending toward the right from the shaft I50 is provided at its right hand end with a fork 2 which underlies and supports a relatively heavy block 203 fixed to the depending rod 20I which forms one of the actuating members of the flexible tamper 200. r

Parallel to the tamper-operating rod 20I and to the right of it, the hollow rod 202 is integral.

at 'its bottom end with the tamper 200 and is arranged to surround and slide upon the saltdelivery pipe 201 which communicates at its top with the salt bin I88. Near the top of v and integral with the hollow rod 202 the lug 209 projects' toward the left in position to overlie and rest upon the right hand end of an arm 208 integral with the block 203. In this manner when the carriage 2| is allowed to drop from the position in which it is shown in Fig. -11 to that in which it is shown in Fig. 2, the rods 20!,

carton C as indicated in Fig. 2.

shaft 239.

202 will fall with the carriage and the tamper 2th will descend into the refrigerant chamber of the The oscillatory tamping action 'of the tamper/ 200 is obtained by a device best illustrated at the upper right-hand portion of Fig. 11 where the hollow rod 202 is shown shaped atthc top to form a bearing' 240 through which extends a flexible Upon the right hand end of this fiexible' shaft an eccentric weight 238 is journaled so as to be freely rotatable upon and relatively to the shaft 239. .The eccentric weight 238 is .restrained from moving lengthwise of the shaft 239 by the ratchet wheel-243 fixed to the extreme right hand end of the shaft 230 and ar- 15 ranged to be-engaged by the spring-pressed pawl 244 pivoted to the outer face of the iweight'238.

In this manner when. the shaft 239 is rotated in one direction the weight238 will be rotated with it; but as the weight 238 swings around in its rotative path a pulsing oscillatory effect will be' transmitted to the tamper 200 by reason ofthe eccentricity of the. weight. In this rnanner 'continued rotation of the eccentric weight 238. will affect the tamper 200 somewhat in. the same manner as would result from a succession of light downward ,blows. The tamper will vibrate prin-" cipally at its lower trailing end, the tamper being sufficiently flexible to prevent any. considerable .movement being transmitted .to its front end which is 7 weighted by the rod 20I and the block" The flexible shaft 239 is journaledat its left hand end in an arm 24I integral with the block- 203 previously mentioned.= Fixed to the extreme left hand end of the shaft 239 is the pinion 245 which meshes with the worm thread. of the -vertical shaft 246, the upper end of which may be suitably journaled in abearing 241' formed in the .lower portion of the salt bin I818, other suitable bearings (not shown) for the shaft 246 being provided as convenient.

Since the shaft 239 with its pinion 245 is journaled in the arm 24I integral with the block.

203, the descent of the block 203 (consequent 5 upon thefalling of the carriage 2I0 as previously described) will also cause the simultaneous descent not only of the rods 20I, 202, but also of the flexible shaft 239 and its pinion 245 which, in moving downwardly, will roll along the vertical shaft 240. During this downward movementof theparts, the consequent rotation of the flexible shaft 239 is ineffective to rotate the eccentric weight 238 due to the disposition of the pawl 244 and ratchet 243. The rotation of the ecceneffect of the rotation of the vertical shaft 248 r and the simultaneous upward movement of the tamper 200 and its associated parts which takes place progressively with the gradual filling of the carton with refrigerant as has been previously mentioned and as willhereinafter be more particularly described. I

As best shown in the upper left hand portion of Fig. 2, theupper extremity of the shaft 24$;65

the rod above the-upper surface of the tamper 200 whereby salt may fed-into the refrigerant chamber of the carton C as previously indicated. The tamper 200 is inclined inwardly as appears in Fig. and directs most of the salt fed upon its upper surface toward the inner cup of the carton producing there a brine of especially low freezing point, though of course due to the vibratory movement of the tamper, some salt will be sprinkled to all points across the width of the annular refrigerant chamber of the carton.

Reverting once more to Fig. 11, the fall of the shown in thatfigure to that in'which it is shown in Fig. 2, not only lowers the tamping mechanism into operative position in the carton C, but also sets in motion the various mechanisms which cause ice and salt to be fed into the carton and properly distributed and tamped therein. The.

carriage 2I0 is provided with an ear 223 perforated to surround the vertical rod I64 which is mounted for limited up and down movement, and which may be secured'and guided at its upper end by a fixed bracket I82 and otherwise secured by and guided in stationary bearings hereinafter to be described, s

Fixed at'a point near the upper end of the rod I 64 is the collar 251 whereby the rod may be lifted and maintained in the position shown in Fig. 11 by means of the ring 254 shown just below the collar 251, the ring 254 being integral with the arm 253 fixed to the block 203. But when the carriage 2I0 drops from the position in which it is shown in Fig. 11 and when, consequently, the block 203 follows the carriage 2 I0 downwardly, the rod I64 is no longer supported as above described.

As the carriage 2I0 drops-downwardly the ear 223 integral with the carriage strikes the cushioning spring I14 surrounding the rod I64 just above the collar I13 which is pinned to the rod.

As a result the rod I64 is impelled to its downwardposition as shown in Fig. 2, while the carriage 2I0 is arrested in its downward motion by the engagement of its sleeve 2I4 with the pad 23I or a. collar 230 fixed to the shaft I50 and the dog 2I5 is re-engaged with the lower portion 232 of the helical thread of the shaft I50. This relower extremity lowers the scraper I19 into operative position within the carton C. Referring Figure 11, theclutch mechanism includes a sleeve I slidably mounted on a squared portion of the horizontal shaft I59, and the sleeve is provided at its left hand end with teeth I6I which upon movement of the sleeve I60 toward the left engage similar teeth I6I on the bevel pinion -I58 iournaled to idle upon the left hand end of the shaft I59. The sleeve I60 is urged to the left or clutch-engaging position by a spring I65 coiled about the shaft I59 and pressing against the 'sleeve I60 at one end and against a collar I66 fixed to the shaft at its other end. The sleeve I60 may be freed to move toward the left by the downward movement of the rod I64, the lower portion of which is flattened to form thecam I61 which slides in guides I68, I69, extending from the fixed sleeve 204. The right hand portion of the cam I 61 is so shaped that when the rod I64 moves to its lower position, the annular cam-follower I62 formed integrally with the sleeve I60, following the contour of the cam I61, will permit the sleeve I60 to move into clutch-engaging position while a rev carton) by engagement of the collar I13 with the carriage 2I0 from the position in which it is top surface of the guide member I68. Upon upward movement of the rod I64 the cam I61 first pushes the clutch sleeve to the right into inoperative position, after which the straight face I 10 of the cam I61 holds the sleeve in this position, although leaving the rod I64 free to continue its upward movement as far as required.

The clutch-operated level pinon I58 is in constant rotative engagement with a similar bevel pinion I51 fixed upon the vertical shaft I50.

With particular reference to Fig. 2, this vertical shaft I50 stands idle except when a carton is in position for operation at the filling station F. As has been previously pointed out, the rotation of the carton-carrying arms I20 causes the gears I23 to roll around the central gear 12 with which the gears I23 are constantly in mesh when in their lower or operative position. As an arm I20 turns into position at the filling station F shown in the left hand central portion of Fig. 2, the gear I23 rolls into mesh with the gear I55 fixed upon the vertical shaft I50 near its lower end. Thus the shaft I 50 begins to rotate, and through the bevel pinion I51 and the clutch mechanism previously described, rotates the horizontal shaft I59 which drives the salt and ice-feeding mechanisms and actuates the tamper as will presently be described in detail.

As shown in Fig. 11, the downward motion of the rod I64 not only causes the engagement of the clutch members previously mentioned, but also, through a pivotal connection at the lower end of the rod I64, lowers the link I15 the lower end of which is pivoted to the arm I16. The left hand end of the arm "6 is pivoted to a fixed bracket I11 and is integral with the supporting arm I 18 of the scraper I19, the arm I18 being shaped to support and journal the grooved roller I80. When these parts last identified are depressed to the position shown in Fig. 2, the grooved roller I80 rests upon the circular edge of the carton C, and the scraper I19 lies within and below the edge of the carton C in position to prevent undue accumulation of ice and salt upon the bottom of the internal cup portion 20, directing the salt and ice thus removed into the annular refrigerant chamber which surrounds the cup 20.

The scraper I19 having been lowered into its operative position, and the clutch members associated with the rod I64 having moved into operative relationship, the horizontal driving shaft I59 is in rotation. As best shown in Fig. 11, the horizontal shaft I59 carries near its right hand end a driving pinion I91 which meshes with the larger gear I94. This gear I94 (see Figs. 2 and 5) is keyed to the grinding shaft I92 of the ice crusher I90, which within the body of the crusher is formed as a helical conveyor I93 serving to thrust the lumps of ice toward the left through the cutting knives I95 fixed to the left hand end of the conveyor shaft where the ice is comminuted anddumped into the carton C.

As has been previously mentioned, ice is supplied to the crusher I90 through a hopper sur- Referring particularly to Figs. 2, 5 and 11, the

ice-crusher-driving gear I94 also meshes with the small gear 25I mounted on the horizontal shaft 250 suitably held in fixed journals. At the left hand end of the shaft 250 the bevel gear 249' meshes with a similar bevel gear 248 fixed to-the lower end of the vertical shaft 206, which, as previously mentioned, drives the salt-feeding mechanism journaledin the lower portion of the salt bin I88 to which access may be had by lifting the cover I89. When the ice crusher is in operation, therefore, the salt-feeding mechanism is also in operation, feeding salt as previously pointed out from the bin I88 downwardly through the pipe 201, through the hollow rod 202 slidably surrounding the pipe 201, and so into the carton C.

From the description thus far given the operation of the refrigerant feeding and tamplng devices may be seen at the beginning of their functioning. As shown in Fig. 2, the carton C is beingsteadily rotated on its own axis by the rotation of its supporting table I26 fixed upon the top of the shaft I22 to which is keyed the gear I23 in mesh with the driving pinion I2. Within and near the bottom of the carton C the tamper 200 is in its lowest position and through the rotation of the eccentric weight 238 previously described, is being givenan up. and down oscillating movement. Crushed ice is being fed into the carton C from the crusher and salt is being fed into the carton along with the accumulating ice, and the scraper I19, stationary relatively to the rotating carton, is preventing undue accumulation of ice on the bottom of the carton cup 20.

As has already been explained, the feeding of ice and salt is begun at about the time the tamper reaches its lowermost position. As shown in Figs.

2and 11 the tamper 200 is curved upward at its left hand end-the front end with reference to the direction of rotation of the carton--to form a raised toe, whereby as the carton C is rotated and the. level of refrigerant rises therein, the tamper 200 will automatically rise and ride upon the surface of the refrigerant. The tamper in rising will raise the rod 20I and the block 203 bearing the arm 253 and'lts terminal ring 254 surrounding the rod I64.

When the carton is filled sumciently with refrigerant, therefore, the ring 254 will impinge against the under side of the collar 251;thereby lifting the rod I54, disconnecting the clutch sleeve I50 from its complementary member, and so stopping further operation of the ice crusher, the salt feeder and the tamper-oscillating mechanism.

The carriage 2I0 meanwhile is being steadily raised by rotation of the shaft I50the dog2l5 U having been reengaged with the worm thread 232 of the shaft, as explained-though preferably at a slower rate than the tamper is raised by the accumulation of refrigerant. The forked end of the carriage 2 I0 will overtake the block 203 shortdog 2 I5 is entering upon the'steep spiral threads 233 of shaft I50. The further rise of carriage 2I0 upon continued rotation ofshaft I50 thereuponbecomes more rapid and the parts are quickly returned to their upper; positions where they are maintained by reason of the entry of dog 2I5 into the annular groove 2" of shaft I50.

This upper position of the tamper 200 and the scraper I19 is sufliciently high to clear the upper end of passing cartons even in the event the carton should be elevated by reason of the strut IZI being in upper position beneath the carton table I26as it may be if the operator failed to lower it as it passed the delivery station.

The various mechanisms are so timed in their operation that the carton will have been completely charged with' refrigerant and will be readyfor the next. operation before the cartoncarrying arms I20 are given another one-third revolution. The manner of causing and timing these one-third revolutions and so inoving the cartons from station to station, has already been described with reference to Figs. 3 and 4 except as to one detail best shown in Fig. 4 as follows: When the carton-carrying arm I20 moves into operative position at the filling station F, its

movement into and its escape from such position are permitted by constructing the gears I23 of such diameter as exactly to bridge the distance between the gear I2 and the gear I55. Thus, when the arm I20 is in the position shown in Fig. 4, these gears are in operative relationship; but when, through the pawl and ratchet mecha- "nism shown in Fig. 3, the carton-carrying arms are turned through another one-third revolution, the gear I23 may freely turn past and away from the gear I55 in a clockwise direction toward the sealing station S where the carton-sealing operations take place.

Mechanisms and operations at the sealing station S I The devices operative in connection with the sealing of the cartons are best shown in Figs. 4, 5, 6, '7, 12, and 13.

Referring to the-left hand.portions of Figs. 5 and 6, the circular outline of the sealing disc reservoir is sh'own at 30I. Associated with this reservoir is the segmentally shaped .pusher 302 which is shown enlarged in Fig." 13 and which operates as best shown in the left hand portion of Fig. 12 to swing horizontally close beneath the lower open end of the sealing disc reservoir 3M and above the plate 303 upon which rests the lowermost of a vertical stack of discs enclosed within the reservoir. This pusher 302 is mounted to oscillate as shown in Figs. 5 and 6; and, as best shown in Fig. 12, when the pusher 302 swings from leftto right across the plate 303, it pushes the lowermost sealing disc 23 out from under the superposed discs and-feeds it through the slot 2980f the adjacently positioned sealing hood 29.1 wherein the disc 23 drops as far as the indented annulus 290, as shown .by broken lines in Fig. 12. The sealing. hood 201 and its associated mechanisms operate as will hereinafter be described, to carry the disc 23 downwardly into register with the upper end of the carton C and thereafter to seal it securely to the upper edge of the carton.

Assuming, then, that the sealinghood 291 has been properly supplied with a disc to close the end of the carton, the operations involved in positioning and sealing the disc in place will be best understood by following the inter-operation of the parts commencing at the point where, as thecarton moves into position at the sealing station, the train of mechanisms is automatically connected with the power.

Referring to Fig. 4, the sealing station S is indicated in the upper left hand portion of the figure. As a carton-carrying arm I20 turns clockwise from the filling station F toward the sealing station S, the outer end of the arm I20, carrying the strut I21, swings the strut into sliding contact with the spring-pressed arm 288 which is fast to the vertical rod 216 journaled in the brackets 218 (Fig. 4), 211 (Fig. 6), secured to the shell 5|. This rod 216, though not shown in elevation in any of the figures, will be understood as extending vertically from a point sufficiently low in the apparatus to make contact with the strut I21 as just described to a point near the top of the apparatus where, as best,

shown in the upper left hand portion of Fig. 6, the upper end of the rod 216 is provided with an arm 215. The free end of the arm 215 is shown in register with a lug 214 fixed to the face of the disc 213 which in turn is keyed to the short shaft 261 journaled in a fixed bearing 268.

Between the left hand end of this bearing 268 and the inner face of the disc 213, the helical spring 219- is compressed, tending to urge the shaft 261 toward the left. At the right hand end of the bearing 268 the toothed pinion 266 is journaled to turn freely about the shaft 261; and on the right hand end of the shaft 261 where it projects through and past the toothed pinion 266, the friction collar 21I is integral with the disc 210 which is fixed to theshaft 261. The disc 210 is provided with a horizontally extend ing pin 282 which as best shown in the upper right hand corner of Fig. '1 is adapted to project into a slot 284 of the arm 285 which is pivoted at its right hand end through the link 286 to the fixed bracket 281, so that as the pin 282 rotates with the disc 210 the arm 285 will be caused to swing downwardly, allowed a dwell in lower position, and subsequently be caused to swing upwardly for purposes later to be described.

The toothed pinion 266 meshes with a threaded vertical shaft 26I which, as best shown in the right hand portion of Fig. 7, is rotatably mounted in bearings 262, 263, the upper bearing 262 being provided with a raceway for ball bearings 264 positioned between the lower face of the bearing 262 and a suitable collar fixed to the shaft 26I whereby upward end-thrust upon the shaft 26I may be suitably taken up.

Near the lower end of the shaft 26I a toothed pinion 260 is keyed thereon, and as best shown in the lower portion of Fig. 7 and the upper left hand portion of Fig. 4, is driven through the gear I23 which, when the gear I23 is carried to theposition-shown at station S, meshes with the pinion 266 as well as withthe central drivin pinion 12.

Thus, as the carton-carrying arm I26 and its associated parts moves into position at station S, the shaft 26I commences to rotate, and the upper threaded end of the shaft26I rotates the pinion 266, the further functioning of which may be best observed by referring to the upper left hand portion of Fig. 6.

As was previously pointed out, this toothed end by the compression spring 219 lying between 7 the left hand end of the bearing 268 and the inner face of the disc-213.

So long as the disc 213 is held against rotation by the engagement of the lug 214 with the arm 215, the toothed pinion 266 will turn upon and relatively to the shaft 261, in spite of the friction between this pinion and the adjacent friction collar 21I. But when the arm 215 is turned counterclockwise away from the lug 214 as has been already described in connection with Figs. 4 and 6, the lug 214 escapes past the end of the arm 215 and the frictional contact between the pinion 265 and the collar 21I will result in the shaft 261 being rotated together with the parts integral therewith. gut as will be seen by referring to Fig. 4, only one rotation of these parts is permitted while any given carton is retained at the sealing station, for the reason that although the spring-pressed arm 280 is operated by the strut m to turn the vertical rod 216 and 25 'rying arm I28 and its associated mechanisms at the sealing station S, results in the rotation of 35 the vertical shaft 26I and .of the toothed pinion 266 which now may cause the disc 210 to rotate with it during one revolution, and through the pin and slot engagement, reciprocate the pivoted arm 285.

It is through the arm 285 that the carton-sealing disc is lowered to the carton and sealed in position. v

The construction of the arm 285 may be best seen in the upper right hand portion of Fig. '1 and the upper left hand portion of Fig. 6, where the arm is shown bifurcated to form prongs 28I, 283 carrying trunnion pins 289 integral with the collar 290 so fitted upon the plunger 293 as to permit the latter to rotate, but not to slide, relative to the collar.

The vertical plunger 293 carries at its lower end, the disc-positioning and sealing mechanism.

The detailed construction and operation of these mechanisms may best be observed in Fig. 12. The plunger 293 is shown hollow throughout most of its length and terminates at its lower end in a circular flange 296 to the lower face of which is secured the annular insulated electric heating andexpansion element 3I5.

The expansible heating element 3I5 indicated in Fig. 12 is formed as an incomplete ring almost meeting at its free .ends and attached on the side opposite the free ends to the flange 296- through a web 3", such attachment permitting the ring at other portions to stand slightly clear of the flange. As shown in'Flg. 12A the ring comprises a bimetallic shell composed of an outer portion 328 of a metal having a low co-eflicient ance wire may be returned adjacent the web 3H (reierring again to Fig. 12) and there connected respectively with the electrical leads 329, 326 extending upwardly into the hollow plunger 292. It will thus be clear that if the leads 323, 329 are connected to the two sides of an electrical circuit the resistance wire 3l8 will become hot, in turn rapidly heating the bi-metaliic shell, causing it and the heating element 3l5 as a whole to increase in diameter.

As already explained with reference to the upper right hand corner of Fig. 7, rotation of disc 2'! and pin 282 with the short shaft 261 will operate the arm 285 and impart a downward movement to the plunger 293. Reverting to Fig. 12, where, at the lower end of the plunger 299, the hood 291 is shown loosely carried on the flange 296, it is apparent that the hood 291 will drop until its internal annulus 299 comes to rest on the edge of the carton C. The carton fits rather closely withinthe hood 291, the rolled flange 390 of which, as best shown in Fig. 5, has

come-into contact with tour guide rollers 330, 991i, 332; 333 whereby the parts are steadied in position for accuracy of subsequent operations.

The plunger 293 withjits heating element hi5 will have iurther downward movement after the hood comes to rest upon the edge'oi' the carton. Assuming a disc 29 to have been positioned within the hood 291 and resting upon the internal annulus 299, the disc will be engaged by the descending heating element 3w (which at the time is sufliciently cool and contracted to enter within the upstanding flange 29 of the disc) and be forced past the annulus 299 and into the end operates with certain mechanism to establish flange 298 with another integral flange 95I- bearing-"upon' its upper face an insulating washer 392. Above the flange 35! the plunger 293 is surrounded by a, sleeve 331 of insulating material firmly fixed to the v plunger. This insulating sleeve extends for some distance up the plunger where its upper end is formed to provide a flange 339; Surroundingthe sleeve 33! is a second sleeve 338 of insulating material which fits so as to permit both sliding and rotative movement between the sleeve 33? and the sleeve 336. The outer sleeve 8361s in turn mounted within a fixed bearing 29d, hav-- ing a irictionally tight fit therein. The outer sleeve 33$, at its-upper end below theflange 939 of the inner sleeve 33], is provided with afflange 3%, and is provided at its lower end with a second flange ass.

. The lead wire 326 extends through an opening in the wall of the hollow plunger 293 and through the insulating sleeve 93! to connect, as by solderving with a metal' ferrule 369 recessed into the outer surface of the sleeve 39'! in such manner that the outer surface of the ierrule is flush with the outersurface or the sleeve 83'! aridis re- .oeived within the bore of the surrounding sleeve 326; Secured to the lower surface of the flange of the outer sleeve 398 is a metal washer staunch, is kept in constant Contact with the ferrule 36% and hence withthe lead 326 through a spring-pressed metal plug 356. The washer 389 in turn is connected to an outside electrical conductor 94?. By this arrangement of sliding contacts a constant connection is maintained between' the lead 347 and the heating element through the lead 229.

It is arranged that movement of the plunger 5 293 will operateto make and breakthe electric connection to the other resistance wire lead 32s and'for this purpose the upper flanges 339 and 388 of the inner and outer sleeves 331 and 336 are respectively provided with metal washers 342, 9&2 positioned to face each other. The washer 369 is electrically connected to the lead 323 which is insulated to extend through the wall of the hollow plunger 291i and the wall of the sleeve 331. The upper washer 3&2 on the outer sleeve 938 is connected to an outside electrical conductor 9M, which is the second conductor of the circuit. It will thus be apparent that when the washers 342 and 389 are in contact the circuit will be closed through the resistance wire 3l8 of the heating element.

In operation the plunger 293 is moved downwardiy in the manner heretofore described and will carry with it the sleeve 331 to bring the washers 993 and 362 into contact and complete 25 the circuit thr'oughthe resistance wire of the heating element. Further downward movement of the plunger 293 after the circuit has thus been completed will force the outer sleeve 335 through its bearing 299 overcoming the frictional resistance between the bearing and sleeve, the electrical circuit being constantly maintained during this movement.

As already indicated with reference to the upper right hand' portion" of Fig. 7, the shape of the slot 286 in the arm 295 is such that the parts will have a dwell in their lowermost position sufficient to permit the temperature or the heating element to be raised suficiently to melt the sealing' wax of the disc '23 and' to "expand and force the flange'oi the disc into firm engagement with the outside container 22 of the carton at this time held closely within the walls of the hood 291. At this time also the hood 291 and the heating element M5- are free to turn with the carton, the hood being loosely mounted on the flange 296 01 the plunger 293, and the heating element being carried by the plunger 293 which is free to rotate within the outer sleeve 2'36.

After the disc has been hermetically sealed in the'cart'on, continued operation lifts the plunger 1293 and'the heating element 3w away from the disc 23. This will be accomplished, in spite of the fact that the heating element has expanded intoiirm engagement with the flange 29 of the disc. because the upward pull which the heating element exerts upon the disc 22 is ofiset by air action due to the disc being hermetically sealed in the end oi the carton.

As will be understood by referring to Fig. 12, when the plunger 299 begins to rise it separates the upper contact washers" 362 and 363, stopping the supply of current to the heating element 215 which, being quite sensitive, will begin to cool within the sealing hood takes place immediately upon the conclusion of the carton-sealing operation, just after the hood has been returned to its upper position as shown in Fig. 12. As has already been mentioned, and as may be observed in Figs. '1 and 12, the hood is provided with a slot 298 for the admission of a sealing disc 23. Ohviously it is requisite that, as shown in Fig. 12, the slot 298 should be in proper position facing the reservoir 39 i, at the moment'when a new disc is thrust out of the reservoir. To effect the proper orientation of the hood (and so the proper positioning of the disc-receiving slot) the hood carries, fixed upon its upper portion, a circular plate 325, which is freely rotatable with the hood about the plunger 293. This plate 325, as indicated in Fig. '7 is designed to cooperate with a resilient roller 321 fixed upon the vertical shaft 29I which is in rotation throughout the entire time during which the mechanisms at the carton-sealing station are: in operation.

As best shown in the upper left hand portion of Fig. 5 and the right hand portion of Fig. 12, the plate 325 is provided with a curved peripheral notch 328, the curve of this notch being concentric with the resilient roller 321, the parts being so positioned that when the plate 325 lies in a plane within the vertical length of theresilient roller 321, the latter will contact with and turn the plate 325 until the curved notch 328 registers with the surface of the resilient roller 321. When the notch 328 reaches the roller, the latter will no longer cause rotation-of the plate 325 and the. hood 291, but will, on the contrary, act to prevent further rotative movement of the hood, the notch 328 being so posi tioned with respect to the hood that the discreceiving slot 298 will be correctly positioned for receiving a disc when the roller 321 coincides with the-notch 328. Further to insure the proper orientation of the hood 291, the plate 325 is provided with an upstanding lug -3l3 which, as the hood arrives at proper disc-receiving position, strikes against the finger 314 mounted upon the disc reservoir 39! or on any convenient stationary surface.

Referring to Fig. 12, where theplunger 293 and its cooperative elements are shown in their uppermost position, it will be observed that the position of the parts is as just described. The resilient roller 321 is in register with thenotch 328 of the plate 325 and, consequently, the slot 298 is in position to receive a sealingdisc 23 which is being thrust toward the slot. Obviously the subsequent downward movement of the plunger 293 and the sealing hood 291 will not be interfered with by the resilient roller 321.

The plate 325, when the parts are in lower operative position, lies below the resilient r'oller.

321. But since, during the sealing operation, the carton C is in rotation about its own axis, and since the sealing hood 291 rotates with the carton during the sealing operation, the sealing hood, on being lifted away from the carton C, may still be turning, or in any event the position of the plate 325 is'unlikely to be such that its curved notch will move immediately into register with the resilient roller'321. But since the roller 321 is resilient, the upward movement of the plunger 293, the hood 291, and its plate 325, will cause the latter to impinge upon and slide upwardly along the rotating surface of the resilient roller 321, which will rotate the plate 325 as it moves upwardly until the notch 32s and the roller coincide.

The detailed operation of the mechanisms which introduce a new sealing disc into the hood 291 upon its return fromthe sealing operation, may be best observed by reference to Figs. 7 and 13. In the upper right hand portion of Fig. 7, the arm 285, by its projecting prong 281, extends between the horizontally positioned arms 3, 312 integral with the vertical rod 319 which is slidably but non-rotatablymounted in suitable fixed guides (not shown). The lower end of the vertical rod.3l9 is provided (see Fig. 13) with helical splines 399 which register slidably with similar splines 391 out in the upper portion of a nut 395 fast upon a shaft 399 which is mounted to rotate but not toslide in suitable bearing brackets (not shown). The nut-395 carries the pusher 392 integral therewith, so that vertical reciprocation of the'rod 319 will cause horizontal oscillation of the pusher 392 whereby, as shown in Fig. 12, sealing discs may be successively thrust from the reservoir 391 into the sealing hood 291.

Reverting to Figs. 7 and 13, when the prong 28! moves down from the positionin which it is shown in those figures, it permits the rod 319 to drop down by gravity. Through the action of the mating splines 399 and 391 the rod 319 by its weight exerts some force'tending to turn the pusher 392 counterclockwise (i. e. toward the left as shown in Fig. 12). Further downward move ment of the prong 28! brings it against the lower." arm 9|2 of the vertical rod 319 to complete the counterclockwise withdrawing movement'of the pusher 392 carrying it to the position, shown in Fig. 5 and permitting a disc from the reservoir to drop down in front of its forward edge. The.

parts maintain this position until the plunger 293 and the prong 28I have returned almost to the end of their upward travel. At this point the prong 28l comes into contact with the upper arm 3 and moves the rod 3I9 upward imparting through the splines 391 and 399 a smart clockwise -movement to the pusher 392 moving it into the position in which it is indicated in Fig. 6 and thereby feeding a :disc into the hood 291 through the slot 298, the disc. coming to rest upon the internal annulus 299 as indicated in broken lines in Fig. 12, and the parts are ready for another carton-sealing operation.

With the feeding in of a disc intothe hood 291 the operations at the sealing station are complete and the mechanisms at this station are halted by the operation of parts previously referred to with reference to the upper left hand portion of Fig. 6, where renewed engagement between the arm 215 withthe lug 214 on the disc 21! fixed to the shaft 291 causes the shaft to cease although the vertical shaft 28! is free to con-- tinue its rotation, turning the toothed pinion 288 about the shaft 261 against the friction of the adjacent collar 211.

The charged and sealed carton is now reach to rotating and the arm 285 to become-stationary, 60

be moved on from the sealing station S to the delivery station D, and, as previously described,

when this point is reached, the various operations upon the other cartons at the other stations have i also been concluded.

By mechanism previously described in connec tion with Figs. 2, 3, and 4, the carton-carrying arms I29 will now be given another one-third revolution. As may best be observed in the upper right hand portion of Fig. 4 and in the central 7 portion of Fig. 2, a curved ramp 9'! is fixed through brackets 98 to the shell 5| and is so positioned that as the carton which has just been sealed at station S moves clockwise toward the delivery station D, the lower (left hand) end of the ramp will be encountered by the strut I21 which will slide along the inclined surface of the ramp and so be raised to the position in which it is shown near the right hand side of Fig. 2. The strut I21, in being raised to this position,

thrusts upwardly the carton-carrying table I26,

confined to certain'illustrative embodiments it'is obvious that changes may be made relative thereto without departing from the spirit of the appended claims.

I claim:

1. In apparatus of the character described in combination, means for holding a carton, means for applying and sealing a capon said carton,- means for rotating the carton, means providing relative movement between the carton and said cap-applying and sealing means, and means including said carton-rotating means for setting said cap-applying and sealing means into operation when the carton is located adjacent thereto.

2. In apparatus of the character described in combination, a carrier for a carton supplied with a refrigerant, station mechanism including means for applying a cap to the carton and means for se'aling the cap in position. thereon, means on said carrier tending to cause operation of said station mechanism when a carton is disposed adjacent thereto, and means on said carrier for releasing said station mechanism for one cycle of operation when a carton is disposed adjacent thereto.

3. In apparatus of the character described in.

combination, a carrier for a carton supplied with a refrigerant, station mechanism including means for applying a cap to the carton and means for sealing the cap in position thereon, means on said carrier tending to cause operation of said station mechanism when a carton is disposed adjacent thereto, and means on said carrier for releasing said station mechanism for one cycle of operation when a carton is disposed adjacent thereto, said operating means on the carrier comprising a gear movable between an upper inoperativeposition.

and a lower operative position with respect to said station mechanism, and said releasing means comprising a strut adapted to hold said gear. in upper position at which time the strut is inoperative with respect to said station mechanism,

4. In apparatus of the character described in combination, a carton carrier, station mechanism including means for applying a cap to the carton, and means active when a carton is disposed in capping "position for securing operation of said station mechanism through one cycle, said means comprising a gear for rotating the carton.

5. In apparatus for capping cartons in combination, a capper means for-supplying capsto said capper including areservoir for carton caps,

an oscillatable member .for feeding caps from the reservoir, a reciprocable rod having means thereon for producing oscillation of said member, and a swinging arm for reciprocating said rod, said capper including heating means for sealing each cap to its respective carton.

6. In apparatus of the character described in combination, a carton carrier, a hood adapted to embrace the top of a carton, means on said carton carrier for causing the hood to be lowered upon the cartonwhen the same is positioned below the hood, projecting means within said hood supporting a cap for the carton, and means for forcing the cap past the projecting means and into covering relationship with respect to said carton.

7. In apparatus of the character described in combination, a carton carrier, a hood adapted to embrace the top of a carton, means on said carton carrier for causing the hood to be lowered upon the carton when-the same is positioned beldw the hood, an annulus within said hood supporting a cap for the carton, and means for forcing the cap past the annulus and into covering relationship with respect to said -carton, said means comprising a shaft passing through the top of said hood and a swinging arm for moving said shaft axially toward the carton.

8. In apparatus of the character described in combination, a carton carrier, a hood adapted to embrace the top of a carton, means on said carton carrier for. causing the hood to be lowered upon the' carton when the same is positioned below the hood, an annulus within said hood supporting a cap for the carton, and means for forcing the can. Past the annulus and into covering relationship with respect to said carton, said means comprising a heating element for sealing the cap upon the carton.

9. In apparatus of the character described in combination, a carton carrier, a hood adapted to embrace the top of a carton, means on said carton carrier for causing the hood to be lowered upon the carton when the same is positioned below the hood, an annulus within said hood sup-. porting a cap for the carton, and means for forcing the-cap past the annulus and into covering relationship with respect to said carton, said means comprising an annular heating element for sealing the cap upon the carton.

10. In apparatus of the character described in combination, a carton carrier, a hood adapted to embrace the t'op of a carton, means on said carton carrier for causing the hood to be lowered upon the carton when the same is positioned below the. hood, an annulus within said hood supporting a cap for the carton, and means for forcing the cap past the annulus and into covering relationship with respect to said carton, said means comprising a split annular heating element for sealing the cap upon the carton, said heating element being expansible to press the cap into firm engagement with the carton.

11. In apparatus of the character described in combination, a carton carrier,a hood adapted to embrace the top of a carton, means on said carton .carrier for causing the hood to be lowered upon the carton when the same is positioned below the hood, an annulus within said hood supporting a cap for the carton, and means for forcing the cap past the annulus and into covering relationship with respect to said carton, said means comprising a reciprocable shaft and a split annular heating element supported thereon within the hood, said heating element being heated when moved toward the carton and allowed to I cool when moved away, and means for operating said shaft to permit a dwell of said heating element upon the carton.

12. In apparatus of the character described in combination, a carton carrier, means for rotating said carrier, a hood adapted to be dropped upon the upper end of the carton when the same is positioned adjacent thereto, a shaft supporting said hood for rotative movement with the carton, an aperture in the side wall of said hood for receiving a cap, and means for stopping the hood with the aperture thereof in cap-receiving position when the hood is raised from the carton.

13. In apparatus for sealing a flanged cap upon a carton in combination, an electrically heated member fitting a cap loosely when cool but expansible to press the flange of the cap into firm engagement with the carton when heated, said member comprising a bimetallic split annular shell, an insulator within said shell, an electrical heating element within said insulator, and means to control the supply of electric current to said heating element.

14. In apparatus for sealing a flanged cap upon a carton, in combination, an electrically heated member fitting a cap loosely when cool but expansible to press the flange of the cap into firm engagement with the carton when heated, said member comprising a bimetallic split annular shell, an insulator within said shell, an electrical heating element within said insulator, and means to control the supply of electric current to said element, said means comprising a reciprocable plunger and contact sleeves embracing the plunger.

15. In apparatus for sealing a flanged cap upon a carton, in combination, an electrically heated element fitting a cap loosely when cool but expansible to press the flange of the cap into firm engagement with the carton when heated, said element comprising a bimetallic split annular shell, an insulator within said shell, an electrical resistor within said insulator and means to con-.

trol the supply of electric current to said resistor, said means comprising a reciprocable plunger and relatively movable insulating sleeves embracing the plunger, said sleeves provided with contact members connected with the resistor and an outside current supply lead respectively.

16. In apparatus of the character described, in combination; a rotatable carton carrier, a rotatable capper having a cap receiving opening, a reservoir for carton caps, said reservoir and capper having axial movement with respect to each other, means for feeding caps from said reservoir to said capper and means for insuring the correct angular position of said rotatable capper with respect to said reservoir.

17. In apparatus of the character described, in combination, a reservoir for carton caps, means for applying said carton caps to a carton including a hood adapted to embrace the top of a carton, an osc'illatable member for feeding caps from the reservoir into said hood, a reciprocable rod having means thereon for producing oscillation of said feeding member and a swinging arm for reciprocating said rod.

18. In an apparatus of the character described, in combination, a carrier for a carton, station mechanism including means for applying a cap to the carton and means for sealing-the cap in position thereon, a reservoir for carton caps, a hood associated with said cap-applying means adapted to embrace the top of a carton, an oscillatable member for feeding caps from the reservoir into said hood, and a. reciprocable rod having means thereon for producing oscillation of said member, said reciprocable rod being reciprocated by said station mechanism.

19. In apparatus of the character described, in 5 combination, a carton carrier, a hood adapted to embrace the top of a carton, means on said carton carrier for causing the hood to be lowered upon the carton when the same is positioned below the hood, projecting means within said hood for supporting a cap for the carton, and means for forcing the cap past the projecting means and into covered relationship with respect to said carton.

20. In apparatus of the character described, in combination, a carton carrier, a hood adapted to embrace the top of a carton, at least one projection within said hood for supporting amp for the carton, means for causing the hood to be lowcred upon the carton when the same is positioned 20 below the hood, and for forcing the cap past the projection and into covering relationship with respect to the carton, and means on said carton carrier for starting said hood-positioning means in operation.

21. In apparatus of the class described, in combination, a carton carrier, station mechanism ineluding a hood adapted to embrace the top of the carton, a cap reservoir, means for supplying caps to said hood, means formed in said hood for supporting a cap for the carton, and means for forcing said cap past the supporting means and into covering position with respect to said carton; and means on said carton carrier adapted to cause the operation of said station mechanism'when a carton is disposed adjacent thereto, said forcing means comprising an annular heating member for sealing the cap on the carton.

22. In apparatus of the class described, in combination, a carton carrier, station mechanism including a hood adapted to embrace the top of a carton on said carton carrier, a cap reservoir and means for moving a 'cap from said reservoir to said hood, means formed in said hood'for supporting the cap supplied thereto, means for forcing the cap past the supporting means and into covering position with respect to said carton, and means on said carton carrier adapted to cause the operation of said station mechanism when a carton is disposed adjacent thereto; and said forcing means comprising an unclosed bimetallic annular heating member having a heating element associated therewith, said heating member being expansible to force the cap into close contact with the carton.-

23. In apparatus of the character described, in combination, a carton carrier, means for rotating said carrier, a cap reservoir, a hood adapted to be positioned over the end of a carton when the same -is positioned adjacent thereto, and a shaft for supporting said hood, the said side Wall of said hood having an aperture therein for receiving caps from said reservoir, means for stopping the hood with the aperture thereof in cap-receiving position when the hood is raised from the carton, and means operable with the motion of said shaft or feeding caps from said reservoir into said aperture.

24. In apparatus of the class described, in combination, a carton carrier, a cap-applying means comprising a hood adapted to be positioned over the top of a carton, reservoir for holding flanged caps, means for feeding said flanged caps into said hood, and means for ejecting a cap in said hood into sealing relationship with respect to said 

